Valve train assembly foe overhead valve engine



J. MIKUCKI VALVE TRAIN ASSEMBLY FOR OVERHEAD VALVE ENGINE Filed June 8,I 1966 I IN V EN TOR. 'John M iKl/CKI' United States Patent 3,335,709VALVE TRAIN ASSEMBLY FOR OVERHEAD VALVE ENGINE John Mikuclri, 4319 W.Schubert Ave., Chicago, Ill. 60639 Filed June 8, 1966, Ser. No. 556,1661 Claim. (Cl. 123-90) This invention relates to overhead valve engines,and more particularly a valve train assembly for overhead valve engine.

It is therefore the main purpose of this invention to provide a valvetrain assembly for overhead valve engine capable of increasing theengine horsepower and reducing the fuel consumption thereof.

Another object of this invention is to provide a valve train assemblyfor overhead valve engine which features a swivel bowl arrangement forkeeping the rocker arm magnetized thereto during the entire operation ofclosing and opening the valve train assembly for overhead valve enginewhich may be readily and inexpensively applied to the existingconventional internal combustion engines by any mechanic without thenecessity of rebuilding various parts of the valve train assembly, suchas, push rod, valve stem, etc.

Still another object of this invention is to provide a valve trainassembly for overhead valve engine which is inexpensive to manufacture,can be moderately priced, is of rugged construction, safe in operation,and provides maximum utility to its user.

Other objects and advantages of this invention will become apparent froma consideration of the following detailed description taken inconnection with the accompanying drawing wherein a satisfactoryembodiment of the invention is shown. However, it is to be understoodthat the invention is not limited to the details disclosed but includesall such variations and modifications as fall within the spirit of theinvention and the scope of the appended claims.

In the drawing:

FIGURE 1 is a top plan view of this invention.

FIGURE 2 is a cross-sectional view taken along the lines 2--2 of FIGURE1.

FIGURE 3 is a plain view of a modified tension spring.

FIGURE 4 is a side elevation of FIGURE 3.

FIGURE 5 is a cross-sectional view shown in elevation of a modifiedswivel bowl.

According to this invention, a valve train assembly for overhead valveengine is provided with a generally conventional rocker arm 11 whichsuitably cooperates with a push rod 12 extending from a lifter member ofa cam (not shown). Rocker arm 11 is provided with an inwardly extending,semi-spherical recess 13 and a circular opening 14 which is positionedwithin an outwardly extending portion 14 prime. A semi-spherical swivelbowl 15 is seated within portion 14 prime and is adapted to admit avalve rod 17 within its recess 15 prime. Rod 17 is secured within saidbowl 15 by means of an adjusting nut 16. A tension spring 21 (seeFIGURES 3 and 4) cooperates between said recess 13 and a portion of the3,335,709 Patented Aug. 15, 1967 valve rod 17 which is disposed betweenbowl 15 and nut 16. A valve stem 18 is provided with a circular stopmember 20 which abuts the coil spring 19.

Looking now at FIGURE 2 of the drawing, one will see that, in operation,the semi-spherical swivel bowl 15 is magnetized so as to keep the rockerarm 11 during the entire operation of closing and opening of the valve.Furthermore, the tension spring 21, which is held securely between theadjusting nut 16 and the swivel bowl 15 presses against the push rod 12which, in turn, presses against a lifter (not shown). This arrangementeliminates the looseness, between the swivel bowl 15 and the rocker arm,and prevents bending of the push rod.

It will also be noted that the semi-spherical bowl 15 is provided with acenter core consisting of soft iron substance 16 prime which is capableof maximum magnetizing efiect.

What I now claim is:

A valve train assembly of an overhead valve engine comprising, incombination, a rocker arm having an opening with its arcuately concavedbottom portion, a stud positioned within said opening, a semi-sphericalbowl mounted on one end of said stud and positioned Within said bottomportion, a tension spring encircling said stud and being positioned onsaid bowl, an adjustable nut on the other end portion of said stud forsecuring said spring on said bowl, a valve stem arrangement forsupporting said rocker arm, said rocker arm being provided with anarcuately convexed portion, a push rod of a lifter abutting saidconvexed portion, the material of said convexed portion encircled by theother end of said tension spring capable of pushing against said pushrod which, in turn, be adapted to activate said lifter, saidsemi-spherical bowl being provided with an opening for admitting saidstud therein, the center portion of said bowl being provided with asemi-spherical soft iron core for maximum magnetizing capacity of saidbowl, said tension spring being provided with a permanent loopencircling said stud and an adjustable loop for encircling said convexedportion of said rocker arm, said adjustable loop having a break throughthe body thereof, said loop being disposed in such a manner that theloops assume nonvibrating relationship to each other, said valve stemarrangement including a stem, the upper portion of said stern beingprovided with a circular stop member, a helical spring adapted to abutsaid stop member, said stern being disposed in a close proximity to thebottom portion of said rocker arm, absorbing vibratory fluctuations ofsaid coil spring.

References Cited UNITED STATES PATENTS 1,363,060 12/1920 Shearer 123.--2,776,652 1/1957 Crotty 123--188 2,955,581 10/1960 Fedak 123--903,139,872 7/1964 Thompson 123-90 3,301,238 1/ 1967 Hanley 12390 MARKNEWMAN, Primary Examiner.

A. L. SMITH, Examiner.

